US20110258824A1 - Tool for making joints of clinch type - Google Patents
Tool for making joints of clinch type Download PDFInfo
- Publication number
- US20110258824A1 US20110258824A1 US13/001,445 US200913001445A US2011258824A1 US 20110258824 A1 US20110258824 A1 US 20110258824A1 US 200913001445 A US200913001445 A US 200913001445A US 2011258824 A1 US2011258824 A1 US 2011258824A1
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- United States
- Prior art keywords
- die
- elements
- tool
- tool part
- movable die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/062—Pierce nut setting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
- B21D39/032—Joining superposed plates by locally deforming without slitting or piercing by fitting a projecting part integral with one plate in a hole of the other plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53996—Means to assemble or disassemble by deforming
Definitions
- the present invention relates to a tool for making joints of the so called clinch type between two or several sheet formed members of metal or non-metal.
- a suitable tool comprises generally two separate tool parts which co-operate for producing said joint.
- a first tool part has the form of a punch which in a linear movement is driven in the direction of a co-axial second tool part in the form of a die with a die cavity at the bottom of which an anvil is arranged.
- the sheet formed members are positioned against the second tool part, the die, provided with movable die elements arranged sliding laterally on a support surface against the forces from a spring element.
- the spring element is generally constituted by a ring made of an elastomer or a toroid formed metal spring surrounding the movable die elements.
- the approaching punch impacts on the surface of one of the members to be joined.
- the material of the two members is first drawn into the die cavity and subsequently due to the interaction between the punch and the anvil at the bottom of the cavity laterally extruded thereby displacing the movable die elements outwardly creating in the sheet formed members a mushroom formed button which interlocks the members.
- the invention is related to a complete tool with a punch-die combination, a separate die and a special form of the spring element used in this type of tool.
- the main part of the description will be attributed to the special characteristics of the die and the spring element.
- the punch could be of the conventional type on which the active free end has a cylindrical form, but other forms could be envisaged as well, e.g. slightly conical forms.
- One of the objects of the present invention is to provide a very robust and wear resistant tool.
- a tool according to the invention is possible to realise with very small dimensions especially in the embodiment with only two movable die elements which makes it suitable for use in narrow environments.
- a further object of the invention is to provide a die element on which the movable die elements are very precisely and efficiently guided in their reciprocating movent at the same time as they are efficiently locked against vertical movement. Vertical forces are applied on the die elements at the end of the procedure when the punch and the joint are retracted from the die cavity.
- a still further object of the invention is to provide a new type of spring element which has decisive advantages over spring elements known in the prior art.
- FIGS. 1A-D show in different views a first embodiment of the second tool part according to the invention without the movable die elements
- FIGS. 2A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position
- FIGS. 3A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the open position
- FIGS. 4A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position and additionally provided with a spring element according to the invention
- FIGS. 5A-D show in different views the embodiment according to FIGS. 1A-D additionally provided with air channels in the body of the tool part,
- FIGS. 6A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position and additionally provided with a spring element according to the invention and air channels in the body of the tool part,
- FIGS. 7A-D show in different views a second embodiment of the second tool part according to the invention without the movable die elements
- FIGS. 8A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements in the closed position
- FIGS. 9A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements in the open position
- FIGS. 10A-D show in different views the embodiment according to FIGS. 7A-D additionally provided with air channels in the body of the tool part,
- FIG. 11A-D show in different views said spring element separately
- FIG. 12 A-F show an embodiment according to which the movable die elements have been provided with an end stop in the form of a heel formed element at the rear end of the of the movable die elements
- FIG. 13 A-F show an embodiment according to which the movable die elements have been provided with an end stop in the form of an expanded rear portion of the element.
- FIGS. 1A-D show in different views a first embodiment of the second tool part according to the invention without the movable die elements 108 , cf. for instance FIG. 2A .
- FIG. 1A shows the tool part in a perspective view.
- the tool part body 101 carries on its upper surface in this embodiment four support elements 103 arranged on one hand to support, by means of their upper surfaces 110 , the sheet formed members (not shown) to be joined together during the joining process, and on the other hand to support and guide the movable die elements 108 in their lateral movement.
- the four support elements 103 are in this embodiment arranged symmetrically around, and at a certain distance from, an anvil 102 having an upper generally flat surface 106 .
- the space between the support elements 103 has been given a form such that it in co-operation with the form of the movable die elements 108 will block the vertical movement of the elements 108 , i.e. in the direction parallel to the axis of the tool part 101 .
- the side walls 104 of the support elements 103 are generally flat and parallel to the same axis and are stabilising and guiding the movable elements in their lateral movement.
- the vertical blocking can be achieved by giving the elements 108 a somewhat larger section at their lower part which co-operates with a corresponding grove 107 at the lower part of the space between the support elements 103 .
- the horizontal generally flat surface 105 supports the sliding movement of the elements 108 .
- FIG. 1B shows a side view of the same embodiment.
- the form of the grove 107 is here clearly visible.
- the arrangement for the vertical blocking could be realised in other ways, e.g. by means of a classical dovetailed grove.
- the grove could alternatively be arranged in the movable element 108 co-operating with a rim arranged on the sidewall 104 , etc.
- FIG. 1C shows a section through the tool part 101 along the line A-A of FIG. 1D .
- the anvil 102 is here represented as a separate part inserted in a dead-end hole at the centre of the tool part 101 . This arrangement makes it easy to change the anvil and adjust the depth of the die cavity depending on e.g. the thickness of the sheet formed members to be joined.
- FIGS. 2A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements 108 in the initial closed position. This is the position at the start of a joining procedure.
- the die elements 108 are kept in position by means of some spring element, an example of which will be described more in detail below. It should be noted, however, that traditional spring elements like elastomeric spring sleeves and toroid formed metal springs could be used.
- the die cavity has a generally cylindrical form defined by the upper generally flat surface 106 on the anvil and the side walls 109 of the four die elements 108 .
- the sidewalls 109 are here illustrated as vertical but could in other embodiments have a somewhat conical form creating a die cavity with different diameters at the top and the bottom.
- the sheet formed members (not shown) to be joined together are supported by the upper surfaces 110 on the support elements 103 during the joining process.
- the vertical forces on the tool part will, during the formation of the joint, be considerable.
- the vertical dimension of the elements 108 could advantageously be chosen so that the upper generally flat surface 111 of the elements 108 will be somewhat lower than the upper surface 110 on the support elements 103 .
- FIGS. 3A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements 108 in the open position.
- the elements 108 are retained in place by means of the spring means e.g. of the type shown in the FIGS. 4 and 6 .
- the joining procedure not necessarily open the die cavity as much as shown in FIG. 3 and could be finalized before the deformed material in the joint touches the support elements 103 .
- FIGS. 4A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements 108 in the closed position and additionally provided with a spring element 301 according to the invention.
- the element 301 has the general form of a cylindrical cage the surface of which has been provided with four slots having an acute angle, not necessarily constant, relative the axis of the cage to form four long elastic arms or blades 303 equally partitioned around the circumference with their free ends at the upper edge of the cage.
- the free end of each blade 303 is in this embodiment provided with a bent flange 304 arranged to bear against the movable element 108 to transfer the spring force to said element. It is understood that the bent flange 304 or another means for transferring the spring force is not always necessary.
- the inner diameter of the cage corresponds to the outer diameter of the tool part body 101 and the positioning of the cage is made by sliding the cage over the tool part body.
- the cage is made of some suitable resilient material such as spring steel and the material the form and length of the blades are chosen to give the appropriate spring force for the movable elements 108 .
- the spring element according to the invention is very compact, easy to change and has excellent properties.
- FIGS. 5A-D show in different views the embodiment according to FIGS. 1A-D additionally provided with channels 112 for compressed air in the body of the tool part 101 .
- FIGS. 5C and 5D show advantageous positions of the outlets 113 from the channels.
- FIGS. 6A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements 108 in the closed position and additionally provided with a spring element 303 according to the invention and air channels 112 in the body of the tool part 101 .
- the lower end portion 302 of the slots has been given a form to leave the openings of the air channels 112 free.
- FIGS. 7A-D show in different views a second embodiment of the second tool part according to the invention without the movable die elements.
- FIG. 7A shows the tool part in a perspective view.
- the tool part body 201 carries on its upper surface in this embodiment four support elements 203 arranged on one hand to support, by means of their upper surfaces 210 , the sheet formed members (not shown) to be joined together during the joining process, and on the other hand to support and guide the movable die elements 208 in their lateral movement.
- the four support elements 203 are in this embodiment arranged symmetrically along the circumference of the tool part body 201 and are protruding from a generally flat surface which at the same time in its central part constitutes the anvil 202 and the surface 205 on which the movable elements are displaced.
- the space between the support elements 203 has in this embodiment too been given a form such that it in co-operation with the form of the movable die elements 208 , cf. FIG. 8 , will block the vertical movement of the elements 208 , i.e. in the direction parallel to the axis of the tool part 201 .
- the vertical blocking is achieved by giving the elements 208 a somewhat larger section at their lower part which co-operates with a corresponding grove 207 at the lower part of the space between the support elements 203 .
- the horizontal generally flat surface 205 supports the sliding movement of the elements 208 .
- FIG. 7B shows a side view of the same embodiment.
- Alternative arrangements for the vertical blocking could be realised in the same ways as for the first embodiment.
- FIGS. 8A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements 208 in the initial closed position. This is the position at the start of a joining procedure.
- the die elements 208 are kept in position by means of some spring element, an example of which has been described above. It should be noted, however, that traditional spring elements like spring sleeves of for instance elastomeric material and toroid formed metal springs could be used.
- the die cavity has a generally cylindrical form defined by the generally flat surface 202 on the anvil and the side walls 209 of the four die elements 208 .
- the sidewalls 209 are here illustrated as vertical but could in other embodiments have a somewhat conical form creating a die cavity with different diameters at the top and the bottom.
- the sheet formed members (not shown) to be joined together are supported by the upper surfaces 210 on the support elements 203 during the joining process.
- the vertical forces on the tool part will, during the formation of the joint, be considerable.
- the vertical dimension of the elements 208 could advantageously be chosen so that the upper generally flat surface 211 of the elements 208 will be somewhat lower than the upper surface 210 on the support elements 203 .
- the displacement of the movable die elements 208 in the direction of the center of the tool part 201 could be limited by means of an end stop.
- Such an end stop could e.g. be implemented by an expanded rear portion of the element 208 in co-operation with a corresponding arrangement of the width of the guiding channel between the support elements 203 .
- An example of this type of end stop is illustrated in FIGS. 13 A-F, cf. below.
- the protruding anvil 102 also forms the end stop for the movable die elements 108 in the direction of the center of the tool part 101 .
- One way of achieving both types of end stops could be to arrange a pin or a screw (not shown) vertically through the movable die element reaching into a co-operating elongated groove (not shown) arranged in the sliding surface 105 , 205 .
- the outward movement of the die elements 108 , 208 will be stopped before the expanded material contacts the support elements 103 , 203 .
- FIGS. 9A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements 208 in the open position.
- the elements 208 are retained in place by means of the spring means e.g. of the type shown in the FIGS. 4 and 6 .
- the joining procedure not necessarily open the die cavity as much as shown in FIG. 9 and could be finalized before the deformed material in the joint touches the support elements 203 .
- FIGS. 10A-D show in different views the embodiment according to FIGS. 7A-D additionally provided with channels 212 for compressed air in the body of the tool part 201 .
- FIGS. 10C and 10D show advantageous positions of the outlets 213 from the channels.
- FIG. 11A-D show in different views said spring element separately. This element has been described in detail in relation to FIGS. 4A-D .
- FIG. 12 A-F show an embodiment according to which the movable die elements 208 ′ have been provided with an end stop in the form of a vertical heel formed element 215 at the rear end of the elements.
- the heel element 215 could reach along the full width of the element 208 ′ or part of the width.
- the heel element is co-operating with a corresponding recess 214 in the tool part body 201 ′.
- the FIGS. 12A-C show the die-anvil combination in its open position and the FIGS. 12D-F in its closed position.
- the spring element 301 ′ in this case has arms 303 ′ without a bent flange 304 . This is as described above an option.
- FIG. 13 A-F show an embodiment according to which the movable die elements 208 ′′ have been provided with an end stop in the form of an laterally expanded rear portion 216 of the element.
- the FIGS. 13A-C show the die-anvil combination in its open position and the FIGS. 13D-F in its closed position.
- the side walls of the support elements 203 ′′ have been arranged with a suitable recess co-operating with the enlarged rear portion of the movable elements.
- double sided enlargements are however preferred.
- FIG. 13F is illustrated how the support surfaces 210 ′′ have been changed in relation to the surfaces 210 .
- the top surface 211 ′′ of the elements 208 ′′ has in this embodiment also a different form compared to the surface 211 .
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- Mechanical Engineering (AREA)
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Insertion Pins And Rivets (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
- The present invention relates to a tool for making joints of the so called clinch type between two or several sheet formed members of metal or non-metal.
- This technique is well known in the art. A suitable tool comprises generally two separate tool parts which co-operate for producing said joint. A first tool part has the form of a punch which in a linear movement is driven in the direction of a co-axial second tool part in the form of a die with a die cavity at the bottom of which an anvil is arranged.
- For making the joint the sheet formed members are positioned against the second tool part, the die, provided with movable die elements arranged sliding laterally on a support surface against the forces from a spring element. The spring element is generally constituted by a ring made of an elastomer or a toroid formed metal spring surrounding the movable die elements.
- The approaching punch impacts on the surface of one of the members to be joined. The material of the two members is first drawn into the die cavity and subsequently due to the interaction between the punch and the anvil at the bottom of the cavity laterally extruded thereby displacing the movable die elements outwardly creating in the sheet formed members a mushroom formed button which interlocks the members.
- One of the problems with this type of it joint is to achieve sufficient strength against both shear forces and peeling forces. A number of tools exist which are more or less efficient when it comes to producing acceptable joints.
- The invention is related to a complete tool with a punch-die combination, a separate die and a special form of the spring element used in this type of tool. In the following the main part of the description will be attributed to the special characteristics of the die and the spring element.
- The punch could be of the conventional type on which the active free end has a cylindrical form, but other forms could be envisaged as well, e.g. slightly conical forms.
- One of the objects of the present invention is to provide a very robust and wear resistant tool. A tool according to the invention is possible to realise with very small dimensions especially in the embodiment with only two movable die elements which makes it suitable for use in narrow environments.
- A further object of the invention is to provide a die element on which the movable die elements are very precisely and efficiently guided in their reciprocating movent at the same time as they are efficiently locked against vertical movement. Vertical forces are applied on the die elements at the end of the procedure when the punch and the joint are retracted from the die cavity.
- A still further object of the invention is to provide a new type of spring element which has decisive advantages over spring elements known in the prior art.
- With the support surfaces close to the centre of the die unwanted deformations of the sheet formed members especially the one in contact with the support surfaces will be kept at a minimum. Additional extruded material will therefore instead go into the mushroom formed button which will increase the strength of the joint. This is especially true when the clamping device used with this kind of tool acting on the sheet formed members from the same side as the punch, having the form of a sleeve surrounding the punch, has been given a contact surface in a form corresponding to the top surface of the support elements. Additional increase of this effect will be reached by treating the top surface of the support elements to give higher friction against the sheet formed member in contact with the same.
- The present invention, which provides a solution to the said technical problems, is characterised according to the appended claims.
- Other objects and advantages of this invention will be apparent from the reading of this description which proceeds with reference to the accompanying drawings forming part thereof and wherein:
-
FIGS. 1A-D show in different views a first embodiment of the second tool part according to the invention without the movable die elements, -
FIGS. 2A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position, -
FIGS. 3A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the open position, -
FIGS. 4A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position and additionally provided with a spring element according to the invention, -
FIGS. 5A-D show in different views the embodiment according toFIGS. 1A-D additionally provided with air channels in the body of the tool part, -
FIGS. 6A-D show in different views the first embodiment of the second tool part according to the invention including the movable die elements in the closed position and additionally provided with a spring element according to the invention and air channels in the body of the tool part, -
FIGS. 7A-D show in different views a second embodiment of the second tool part according to the invention without the movable die elements, -
FIGS. 8A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements in the closed position, -
FIGS. 9A-D show in different views the second embodiment of the second tool part according to the invention including the movable die elements in the open position, -
FIGS. 10A-D show in different views the embodiment according toFIGS. 7A-D additionally provided with air channels in the body of the tool part, -
FIG. 11A-D show in different views said spring element separately, -
FIG. 12 A-F show an embodiment according to which the movable die elements have been provided with an end stop in the form of a heel formed element at the rear end of the of the movable die elements, -
FIG. 13 A-F show an embodiment according to which the movable die elements have been provided with an end stop in the form of an expanded rear portion of the element. -
FIGS. 1A-D show in different views a first embodiment of the second tool part according to the invention without themovable die elements 108, cf. for instanceFIG. 2A .FIG. 1A shows the tool part in a perspective view. Thetool part body 101 carries on its upper surface in this embodiment foursupport elements 103 arranged on one hand to support, by means of theirupper surfaces 110, the sheet formed members (not shown) to be joined together during the joining process, and on the other hand to support and guide themovable die elements 108 in their lateral movement. The foursupport elements 103 are in this embodiment arranged symmetrically around, and at a certain distance from, ananvil 102 having an upper generallyflat surface 106. The space between thesupport elements 103 has been given a form such that it in co-operation with the form of themovable die elements 108 will block the vertical movement of theelements 108, i.e. in the direction parallel to the axis of thetool part 101. Theside walls 104 of thesupport elements 103 are generally flat and parallel to the same axis and are stabilising and guiding the movable elements in their lateral movement. The vertical blocking can be achieved by giving the elements 108 a somewhat larger section at their lower part which co-operates with acorresponding grove 107 at the lower part of the space between thesupport elements 103. The horizontal generallyflat surface 105 supports the sliding movement of theelements 108. -
FIG. 1B shows a side view of the same embodiment. The form of thegrove 107 is here clearly visible. However, it should be noted that the arrangement for the vertical blocking could be realised in other ways, e.g. by means of a classical dovetailed grove. The grove could alternatively be arranged in themovable element 108 co-operating with a rim arranged on thesidewall 104, etc. -
FIG. 1C shows a section through thetool part 101 along the line A-A ofFIG. 1D . Theanvil 102 is here represented as a separate part inserted in a dead-end hole at the centre of thetool part 101. This arrangement makes it easy to change the anvil and adjust the depth of the die cavity depending on e.g. the thickness of the sheet formed members to be joined. - Further below a second embodiment will be described in detail but it should be mentioned that the inventive idea could be realised on tool parts having at least two
movable elements 108. -
FIGS. 2A-D show in different views the first embodiment of the second tool part according to the invention including the movabledie elements 108 in the initial closed position. This is the position at the start of a joining procedure. Thedie elements 108 are kept in position by means of some spring element, an example of which will be described more in detail below. It should be noted, however, that traditional spring elements like elastomeric spring sleeves and toroid formed metal springs could be used. - As can be seen in
FIG. 2A and 2D the die cavity has a generally cylindrical form defined by the upper generallyflat surface 106 on the anvil and theside walls 109 of the four dieelements 108. Thesidewalls 109 are here illustrated as vertical but could in other embodiments have a somewhat conical form creating a die cavity with different diameters at the top and the bottom. - As mentioned the sheet formed members (not shown) to be joined together are supported by the
upper surfaces 110 on thesupport elements 103 during the joining process. The vertical forces on the tool part will, during the formation of the joint, be considerable. In order to facilitate the sliding lateral movement of theelements 108 which take place during the formation of the joint the vertical dimension of theelements 108 could advantageously be chosen so that the upper generallyflat surface 111 of theelements 108 will be somewhat lower than theupper surface 110 on thesupport elements 103. -
FIGS. 3A-D show in different views the first embodiment of the second tool part according to the invention including the movabledie elements 108 in the open position. Theelements 108 are retained in place by means of the spring means e.g. of the type shown in theFIGS. 4 and 6 . It should be noted that the joining procedure not necessarily open the die cavity as much as shown inFIG. 3 and could be finalized before the deformed material in the joint touches thesupport elements 103. - Experiments have shown that an efficient clamping of the sheet formed members as close as possible to the centre of the joint will contribute to greater strength of the joint. Therefore, the form of the support elements according to the invention is very advantageous. In order to minimise the sliding of the material over the
surface 110 this surface could be treated to give enhanced friction. -
FIGS. 4A-D show in different views the first embodiment of the second tool part according to the invention including the movabledie elements 108 in the closed position and additionally provided with aspring element 301 according to the invention. Theelement 301 has the general form of a cylindrical cage the surface of which has been provided with four slots having an acute angle, not necessarily constant, relative the axis of the cage to form four long elastic arms orblades 303 equally partitioned around the circumference with their free ends at the upper edge of the cage. The free end of eachblade 303 is in this embodiment provided with abent flange 304 arranged to bear against themovable element 108 to transfer the spring force to said element. It is understood that thebent flange 304 or another means for transferring the spring force is not always necessary. The inner diameter of the cage corresponds to the outer diameter of thetool part body 101 and the positioning of the cage is made by sliding the cage over the tool part body. The cage is made of some suitable resilient material such as spring steel and the material the form and length of the blades are chosen to give the appropriate spring force for themovable elements 108. The spring element according to the invention is very compact, easy to change and has excellent properties. -
FIGS. 5A-D show in different views the embodiment according toFIGS. 1A-D additionally provided withchannels 112 for compressed air in the body of thetool part 101.FIGS. 5C and 5D show advantageous positions of theoutlets 113 from the channels. -
FIGS. 6A-D show in different views the first embodiment of the second tool part according to the invention including the movabledie elements 108 in the closed position and additionally provided with aspring element 303 according to the invention andair channels 112 in the body of thetool part 101. Thelower end portion 302 of the slots has been given a form to leave the openings of theair channels 112 free. -
FIGS. 7A-D show in different views a second embodiment of the second tool part according to the invention without the movable die elements.FIG. 7A shows the tool part in a perspective view. Thetool part body 201 carries on its upper surface in this embodiment foursupport elements 203 arranged on one hand to support, by means of theirupper surfaces 210, the sheet formed members (not shown) to be joined together during the joining process, and on the other hand to support and guide the movabledie elements 208 in their lateral movement. - The four
support elements 203 are in this embodiment arranged symmetrically along the circumference of thetool part body 201 and are protruding from a generally flat surface which at the same time in its central part constitutes theanvil 202 and thesurface 205 on which the movable elements are displaced. The space between thesupport elements 203 has in this embodiment too been given a form such that it in co-operation with the form of the movabledie elements 208, cf.FIG. 8 , will block the vertical movement of theelements 208, i.e. in the direction parallel to the axis of thetool part 201. The vertical blocking is achieved by giving the elements 208 a somewhat larger section at their lower part which co-operates with acorresponding grove 207 at the lower part of the space between thesupport elements 203. The horizontal generallyflat surface 205 supports the sliding movement of theelements 208. -
FIG. 7B shows a side view of the same embodiment. Alternative arrangements for the vertical blocking could be realised in the same ways as for the first embodiment. -
FIGS. 8A-D show in different views the second embodiment of the second tool part according to the invention including the movabledie elements 208 in the initial closed position. This is the position at the start of a joining procedure. Thedie elements 208 are kept in position by means of some spring element, an example of which has been described above. It should be noted, however, that traditional spring elements like spring sleeves of for instance elastomeric material and toroid formed metal springs could be used. - As can be seen in
FIG. 8A and 8D the die cavity has a generally cylindrical form defined by the generallyflat surface 202 on the anvil and theside walls 209 of the four dieelements 208. Thesidewalls 209 are here illustrated as vertical but could in other embodiments have a somewhat conical form creating a die cavity with different diameters at the top and the bottom. - As mentioned the sheet formed members (not shown) to be joined together are supported by the
upper surfaces 210 on thesupport elements 203 during the joining process. The vertical forces on the tool part will, during the formation of the joint, be considerable. In order to facilitate the sliding lateral movement of theelements 208 which take place during the formation of the joint the vertical dimension of theelements 208 could advantageously be chosen so that the upper generallyflat surface 211 of theelements 208 will be somewhat lower than theupper surface 210 on thesupport elements 203. - In order to make sure that the die cavity forms properly and centered in the starting position, i.e. the closed position as illustrated in
FIG. 8 , the displacement of the movabledie elements 208 in the direction of the center of thetool part 201 could be limited by means of an end stop. Such an end stop could e.g. be implemented by an expanded rear portion of theelement 208 in co-operation with a corresponding arrangement of the width of the guiding channel between thesupport elements 203. An example of this type of end stop is illustrated inFIGS. 13 A-F, cf. below. - In the first embodiment described above the protruding
anvil 102 also forms the end stop for the movabledie elements 108 in the direction of the center of thetool part 101. - In some embodiments you would also wish to arrange an end stop for the movable die elements in their movement out from the centre of the
respective tool part surface - In some embodiments the outward movement of the
die elements support elements -
FIGS. 9A-D show in different views the second embodiment of the second tool part according to the invention including the movabledie elements 208 in the open position. Theelements 208 are retained in place by means of the spring means e.g. of the type shown in theFIGS. 4 and 6 . It should be noted that the joining procedure not necessarily open the die cavity as much as shown inFIG. 9 and could be finalized before the deformed material in the joint touches thesupport elements 203. - Experiments have shown that an efficient clamping of the sheet formed members as close as possible to the centre of the joint will contribute to greater strength of the joint. Therefore, the form of the support elements according to the invention is very advantageous. In order to minimise the sliding of the material over the
surface 210 this surface could be treated to give enhanced friction. -
FIGS. 10A-D show in different views the embodiment according toFIGS. 7A-D additionally provided withchannels 212 for compressed air in the body of thetool part 201.FIGS. 10C and 10D show advantageous positions of theoutlets 213 from the channels. -
FIG. 11A-D show in different views said spring element separately. This element has been described in detail in relation toFIGS. 4A-D . -
FIG. 12 A-F show an embodiment according to which the movabledie elements 208′ have been provided with an end stop in the form of a vertical heel formedelement 215 at the rear end of the elements. Theheel element 215 could reach along the full width of theelement 208′ or part of the width. As can be seen, especially inFIG. 12B the heel element is co-operating with acorresponding recess 214 in thetool part body 201′. TheFIGS. 12A-C show the die-anvil combination in its open position and theFIGS. 12D-F in its closed position. It could also be noted that thespring element 301′ in this case hasarms 303′ without abent flange 304. This is as described above an option. -
FIG. 13 A-F show an embodiment according to which the movabledie elements 208″ have been provided with an end stop in the form of an laterally expandedrear portion 216 of the element. TheFIGS. 13A-C show the die-anvil combination in its open position and theFIGS. 13D-F in its closed position. In this embodiment the side walls of thesupport elements 203″ have been arranged with a suitable recess co-operating with the enlarged rear portion of the movable elements. In principle it would be sufficient to arrange the expandedportion 216 only at one side of the movable element. In order to assure the best possible guiding of theelements 208″ double sided enlargements are however preferred. InFIG. 13F is illustrated how the support surfaces 210″ have been changed in relation to thesurfaces 210. Thetop surface 211″ of theelements 208″ has in this embodiment also a different form compared to thesurface 211.
Claims (1)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08159293.3A EP2138249B1 (en) | 2008-06-27 | 2008-06-27 | Tool for making joints of clinch type |
EP08159293 | 2008-06-27 | ||
EP08159293.3 | 2008-06-27 | ||
PCT/EP2009/058110 WO2009156519A1 (en) | 2008-06-27 | 2009-06-29 | Tool for making joints of clinch type |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110258824A1 true US20110258824A1 (en) | 2011-10-27 |
US9050645B2 US9050645B2 (en) | 2015-06-09 |
Family
ID=39926412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/001,445 Active 2031-12-25 US9050645B2 (en) | 2008-06-27 | 2009-06-29 | Tool for making joints of clinch type |
Country Status (5)
Country | Link |
---|---|
US (1) | US9050645B2 (en) |
EP (2) | EP2517804B1 (en) |
ES (2) | ES2448440T3 (en) |
PL (2) | PL2138249T3 (en) |
WO (1) | WO2009156519A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160107280A1 (en) * | 2014-10-15 | 2016-04-21 | Fu Ding Electronical Technology (Jiashan) Co.,Ltd. | Press mechanism |
US20160236260A1 (en) * | 2013-11-04 | 2016-08-18 | Bollhoff Attexor Sa | Tool for making joints of clinch type |
CN109411265A (en) * | 2018-12-12 | 2019-03-01 | 国网四川省电力公司成都供电公司 | Handling instrument for Mume flower contact spring |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3016307A1 (en) * | 2014-01-13 | 2015-07-17 | Jean Claude Chabod | ASSEMBLY TOOLS WITHOUT REPLACEMENT OF TOLE BY STITCHING POINTS OF ALL FORMS, THE MATRICES OF WHICH ARE INSTANTLY SLIPPED ON THE BOTTOM OF THE BUNCHING OF THE BITTER |
DE102018103309A1 (en) | 2018-02-14 | 2019-08-14 | Eckold Gmbh & Co. Kg | Die for a joining tool |
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US5339509A (en) * | 1980-09-08 | 1994-08-23 | Btm Corporation | Method for attachment of fastener to sheet material |
US5946782A (en) * | 1995-07-11 | 1999-09-07 | Dubugnon; Olivier | Tool for making joints between sheet-formed members |
US20060096076A1 (en) * | 2002-04-04 | 2006-05-11 | Eugen Rapp | Toll for riveted connection |
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---|---|---|---|---|
SE9904167D0 (en) * | 1999-11-16 | 1999-11-16 | Attexor Equip | Atool for joining two or several overlaying sheet formed members |
US7150086B2 (en) * | 2001-04-04 | 2006-12-19 | Eugen Rapp | Tool that connects pieces through a process of riveting |
US7658089B2 (en) * | 2003-02-14 | 2010-02-09 | Newfrey Llc | Automated monitoring for clinching joints |
DE10318060A1 (en) * | 2003-04-17 | 2004-11-18 | Eckold Gmbh & Co Kg | Die for a tool set for mechanical joining |
DE102004033228B4 (en) * | 2004-07-08 | 2007-06-21 | Manfred Kern | Die and device for clinching |
US7698797B2 (en) * | 2005-02-02 | 2010-04-20 | Ford Global Technologies | Apparatus and method for forming a joint between adjacent members |
US7694399B2 (en) | 2005-03-04 | 2010-04-13 | Btm Corporation | Sheet fastening apparatus and method |
-
2008
- 2008-06-27 PL PL08159293T patent/PL2138249T3/en unknown
- 2008-06-27 EP EP12178068.8A patent/EP2517804B1/en active Active
- 2008-06-27 PL PL12178068T patent/PL2517804T3/en unknown
- 2008-06-27 EP EP08159293.3A patent/EP2138249B1/en active Active
- 2008-06-27 ES ES12178068.8T patent/ES2448440T3/en active Active
- 2008-06-27 ES ES08159293.3T patent/ES2463423T3/en active Active
-
2009
- 2009-06-29 WO PCT/EP2009/058110 patent/WO2009156519A1/en active Application Filing
- 2009-06-29 US US13/001,445 patent/US9050645B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5339509A (en) * | 1980-09-08 | 1994-08-23 | Btm Corporation | Method for attachment of fastener to sheet material |
US5946782A (en) * | 1995-07-11 | 1999-09-07 | Dubugnon; Olivier | Tool for making joints between sheet-formed members |
US20060096076A1 (en) * | 2002-04-04 | 2006-05-11 | Eugen Rapp | Toll for riveted connection |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160236260A1 (en) * | 2013-11-04 | 2016-08-18 | Bollhoff Attexor Sa | Tool for making joints of clinch type |
JP2016539811A (en) * | 2013-11-04 | 2016-12-22 | ベルホフ アッテクサー エスエー | Tools for creating clinch-type joints |
US10279387B2 (en) * | 2013-11-04 | 2019-05-07 | Bollhoff Attexor Sa | Tool for making joints of clinch type |
US20160107280A1 (en) * | 2014-10-15 | 2016-04-21 | Fu Ding Electronical Technology (Jiashan) Co.,Ltd. | Press mechanism |
US10112276B2 (en) * | 2014-10-15 | 2018-10-30 | Fu Ding Electronical Technology (Jiashan) | Press mechanism |
CN109411265A (en) * | 2018-12-12 | 2019-03-01 | 国网四川省电力公司成都供电公司 | Handling instrument for Mume flower contact spring |
Also Published As
Publication number | Publication date |
---|---|
EP2138249A1 (en) | 2009-12-30 |
PL2138249T3 (en) | 2014-08-29 |
PL2517804T3 (en) | 2014-06-30 |
EP2517804B1 (en) | 2013-11-20 |
US9050645B2 (en) | 2015-06-09 |
WO2009156519A1 (en) | 2009-12-30 |
EP2517804A1 (en) | 2012-10-31 |
ES2448440T3 (en) | 2014-03-13 |
EP2138249B1 (en) | 2014-02-12 |
ES2463423T3 (en) | 2014-05-27 |
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